package com.wisely.highlight_spring4.ch1.aop;

import java.lang.reflect.Method;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class LogAspect {
	@Pointcut("@annotation(com.wisely.highlight_spring4.ch1.aop.Action)") //注解声明切点
	public void annotationPointCut(){};
	@After("annotationPointCut()") //声明一个建言，并使用@Pointcut定义的切点
	public void after(JoinPoint joinPoint){
		MethodSignature signature = (MethodSignature) joinPoint.getSignature();
		Method method = signature.getMethod();
		Action action = method.getAnnotation(Action.class);
		System.out.println("注解式拦截: "+action.name());
	}
	@Before("execution(* com.wisely.highlight_spring4.ch1.aop.DemoMethodService.*(..))") //建言直接使用拦截规则作为参数
	public void before(JoinPoint joinPoint){
		MethodSignature signature = (MethodSignature) joinPoint.getSignature();
		Method method = signature.getMethod();
		System.out.println("方法规则拦截: "+method.getName());
	}
}
